Oprah Winfrey improper bent trying to lift the flowers is the caused of her backache. She did not use the proper lifting of using the legs instead of bending at the back.
Fortunately, her injuries were not severe and she had no hard feelings about the incident.
Oprah shared her thought through Twitter post,
"In bed with an ice pack most of today. Moved a bushel of roses sent by @TylerPerry and sprained a back muscle."
Meanwhile, Oprah's friend tweet her apology and Tyler Perry said,
"I feel so bad. I like to send really large flower arrangements to people for whatever occasion. Well, I sent one to Oprah yesterday for her birthday. She strained her back picking it up. No joke! Feel better Oprah. Happy birthday. Sorry."